Repetition means for calculating-machines.



No. 769,614. PATENTBD SEPT. 6, 1904. K. KELLING. REPETITION MEANS FORCALCULATING MACHINES.

APPLICATION FILED OCT. 3, 1908.

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No. 769,614. PATENTED SEPT. 6, 1904. K. KELLING. REPETITION MEANS FORCALCULATING MACHINES. APPLICATION FILED OCT. 2, 1903. N0 MODEL. 2snms41mm 2.

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UNITED STATES Patented September 6, 19u4.

PATENT @EErcE.

KURT KELLING, OF DRESDEN, GERMANY, ASSIGNOR TO GRIMA IE, NATALIS & (10.,COMMANDITGESELLSCHAFT AUF AKTIEN, OF BRAUNSCHWEIG,

GERMANY.

REPETITION MEANS FOR CALCULATING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 769,614, datedSeptember 6, 1904.

Application filed October 3, 1903. Serial No. 175,666. (No model.) i

To (all whomzlt may concern.-

Be it known that I, KURT KELLING, engineer, a subject of the King ofSaxony, residing at 2 Nordstrasse, Dresden, Kingdom of Saxony,

5 Empire of Germany, have invented certain new and useful Improvementsin Repetition Means for Calculating-Machines, of which the following isa specification.

1t frequently happens in calculating-ma- IO chines that a given group offiguressuch, for instance, as 1 13has to be inserted in the calculationseveral times in succession by depressing the respective keys 1 4 3 andfrequently also with an altered decimal point 15 for instance, 1&3 1x13or 1 130 or 14300, &c.

Now this invention has for its object a means for avoiding repeatedadjustments in the cases mentioned, which means consist in a secondkeyboard, which is a movable one, being employed in addition to theordinary key arrangement in such a way that repeated adjustments of akey while retaining the figuregroup may be executed by the movement ofIn other words, the separate keys only require to be once adjusted. Suchan arrangement also affords the advantage that repetitions need not takeplace immediately in succession, but-that other groups of 3 figures maybe adjusted or inserted between the separate similar groups, and yet therepeated group may be caused to appear by mechanical means again at anydesired moment.

In the accompanying drawings, Figure 1 is a plan view, Fig. 2 a sideview, and Fig. 3 a

front view, of the machine. Fig. A is a sectional top plan view of aportion of the upper keyboard, and Fig. 5 is a transverse sectionalelevation of the same, these tWo figures being 4 intended particularlyto illustrate a means for locking the upper keys down.

As shown in Figs. 1 and 2, a second keyboard, Z), is arranged inaddition to the actual key mechanism a, which keyboard 6 may be sodepressed onto the first, a, that the keys 'in it which are depressedadjust the keys of the mechanism a lying beneath it, While the otherkeys of the latter remain unaffected. lf,there fore, in the keymechanism 7) a frequently-recurring group of figures has been adjustedby 5 depressing the respective keys, by simply depressing the upperkeyboard onto the under one the respective group of figures may beintroduced as frequently as desired and at any suitable time into thecalculation. Any of the known arrangements adapted for the purpose maybe employed for securing the keys depressed in the movable keyboard andfor preventing the depression of several keys of one row of values, thedepressed keys being again released by releasing the locking mechanismafter their use is ended. The mounting of the movable keyboard 5 may beany suitable one, only care must be taken that when in a nonworkingposition it does not impede the han- 5 dling of the fixed keyboard a.Thekeyboard 7) may for this purpose, as indicated in Fig. 1,

be adapted to be moved on hinges and folded up or displaced upwardtransversely to its plane or even be displaced laterally. The 7last-named arrangement, by which the keyboard Z), in addition to itsmobility, has also the power of lateral displacement relative to thekeys of the fixed board a, also affords the following advantage: If agiven group of figures for instance, the already-mentioned 143is to beinserted in the calculation several times, but with a different decimalvaluesuch as arises, for instance, in using so-called adding-machinesfor substracting and dividingthe movable keyboard 5 is so arranged as tobe displaceable in the direction of the decadic-value points. Then bymeans of the movable keyboard, according to the above example, thefollowing values may be 5 successively printed:

143 000, &c. 9

As the figure values, or rather the keys incorporating them, arearranged in rows running at right angles to the direction of writing,the above-mentioned operation means the multiple displacement of therespective group of figures 14:3 to the right.

In the form of construction shown in the drawings the keyboard 6 is adjustabl y mounted on a bar 8 and is moved by means of wheels r on a bara and is usually held in a raised position by means of springs located,for instance, on guide-pins f. At the rear part of thiskeyboard-carriage a pressure-yoke d is located, which is formed in frontas a handle it and which rests approximately in the middle on pins 2,mounted on the keyboard. If the handle it be depressed, the yoke 62depresses the keyboard I) by means of the pins .2. The keys of the boarda, which are situated under the depressed keys of the board 6, are thenadjusted.

In Figs. 4 and 5 I show a means for holding the upper keys depressedduring the repeating operation and in the latter figure show one of thekeys as locked down. Under each row of keys I arrange a locking device,as X, which is in the nature of a spring-actuated slide. I will nowdescribe in detail the structure of one of the sliding locking clevicesX and its manner of cooperating with a row of keys, such descriptionapplying to the other rows of keys and respective sliding lockingdevices. In said two Figs. 4 and 5 the upper keys therein shown aredenoted by b. The lower ends of these keys are beveled, as at On theforward side of each keyis a notch '0, while on the opposite side andbelow the notch oisanotcho. TheslideXhasarowofnotches registering withthe respective keys in a cooperating row, the forward and rear walls aand a, respectively, of the notches beingbeveled to enter the respectivenotches '0 and c in the several keys. In Fig. 5 I have represented threekeys, the intermediate one being depressed in opposition to itselevating-spring. As said key is depressed the beveled face 3 thereofrides against the forward wall a of a cooperating' notch to move theslide X forward in opposition to its spring, the motion being continueduntil the notch 21 is in line with the wall n, at which time said wallor locking part n is sprung into the notch 'v of the depressed key tolock the same down. When the key thus depressed moves the slide Xforward, the locking portions 10 thereof are moved intothe notches o toprevent the depression of the other keys in the group. Upon the forwardside of the carriage t is mounted a rail X, having depending pins forengaging the several slides X and also provided with aforwardly-extending knob X By pulling the rail X forward through themedium of the knob X the slide X will be moved in a correspondingdirection to release a depressed key, the locking portion a during suchmotion being carried out of the notch 41. This forward and key-releasingmovement of the slide X is readily permitted by reason of the fact thatthe notches w are deeper than the notches o.

In the above-mentioned calculating operation, for which this improvedarrangement is particularly applicable, divisions are effected bycontinued subtraction, and for this the keyboard 6 must always bedisplaced to the right to the extent of a decadic value. In order thatthe rows of keys of the upper and under keyboards may lie correctlyoneabove the other, notches 6 maybe provided on the front side of theapparatus, in which notches e corresponding projections of the carriageengage. Fig. 2 shows an elevation of these notches e in such anarrangement that by them when the handle it is simply depressed anautomatic moving forward of the keyboard or carriage to the extent of avertical row of keys is operated. For this object each two adjacentnotches are connected by an inclined slot g, and these inclined slotsare so arranged that when the yoke cl is elevated the guide-pins d, Fig.1, escape from the notches while when the yoke is depressed the pinsenter the notches, and thus are guided over into the adjacent slots 6.As these are the distance of two adjoining rows of keys apart, thedisplaceable keyboard is moved forward to the extent of this distanceapart-that is to say, to the next row of keysin the manner hereinbeforeexplained.

It will be understood from the foregoing that each notch c has a branch9. When, therefore, the operator presses down the keyboard andsimultaneously presses the same toward the left, then the pin will becaused to traverse the left side wall of a notch 6. Should the operator,however, in thrusting the keyboard downward press the same toward theright, then the pin will be caused to travel along the right side ofsaid notch and will en- 'ter the branch 9 of said notch and from thelatter will pass into an adjacent notch e.

I declare that what I claim is 1. A calculating-machine having twocooperative keyboards, each provided with a series of rows of keys. andone of said keyboards being laterally movable with respect to the otherkeyboard and its keys being adapted to operate those of the companionkeyboard.

2. A calculating-machine having a keyboard provided with keys bearingnumerals combined with a second keyboard provided with numeral-bearingkeys, the numerals of which are duplicates of those of said other 4 keysand said second keyboard being depressible and laterally movablerelatively to the other keyboard.

3. A calculating machine having a keyboard provided with keys, combinedwith a traveling depressible carriage having akeyboard the keys of whichare duplicates of said other keys, and mechanism for causing positivelythe lateral feed of the carriage.

4. A calculating machine having a keyboard provided with keys bearingnumerals, a hinged carriage having a keyboard the keys or which bearnumerals the duplicates of those on the other keys, and means foryieldingly holding the second keyboard in an elevated position.

5. A calculating-machine having a keyboard, a hinged carriage having akeyboard the keys of which are duplicates of the other keys, means foryieldingly holding the second keyboard in an elevated position, a handleconnected with the carriage, and means cooperative with the handle forcausing the lateral motion of the carriage.

6. A calculating-machine having a keyboard provided with keys, combinedwith a carriage having a keyboard the keys of which are duplicates ofthe other keys, the carriage being arranged for lateral travel, a yokeconnected with the carriage, a handle connected with the yoke, notchesto receive projections upon the handles, the notches being connected byinclined slots to eflect the lateral movement of the carriage, andsprings for holding the carriage in an elevated position.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

KURT KELLING.

Vitnesses:

FRANZ PAUL UHLIG, AUGUST MAX FENKER.

